(sometimes lowercase) (in some grading systems) a grade or mark, as in school or college, indicating the quality of a student's work as poor or barely passing.
3.
(sometimes lowercase) a classification, rating, or the like, indicating poor quality.
4.
Music.
a.
the second tone in the scale of C major, or the fourth tone in the relative minor scale, A minor.
b.
a string, key, or pipe tuned to this tone.
c.
a written or printed note representing this tone.
d.
(in the fixed system of solmization) the second tone of the scale of C major, called re.
e.
the tonality having D as the tonic note.
5.
(sometimes lowercase) the Roman numeral for 500. Compare Roman numerals.
deu·ter·onAudio Help (dōō'tə-rŏn', dyōō'-) Pronunciation Key
n.
Abbr. d
The nucleus of a deuterium atom, consisting of a proton and a neutron, regarded as a subatomic particle with unit positive charge.
A straight line segment passing through the center of a figure, especially of a circle or sphere, and terminating at the periphery.
The length of such a segment.
Thickness or width.
A unit for measuring the magnifying power of a microscope lens or telescope, equal to the number of times an object's linear dimensions are apparently increased.
[Middle English diametre, from Old French, from Latin diametrus, from Greek diametros (grammē), diagonal (line) : dia-, dia- + metron, measure; see mē-2 in Indo-European roots.]
down quark
n.
Abbr. d
A quark with a charge of - 1/3 , a mass about 20 times that of the electron, and a downward spin. It is a component of protons and neutrons. See Table at subatomic particle.
Main Entry: d- Pronunciation: "dE, 'dE Function: prefix 1: dextrorotatory —usually printed in italic <d-tartaric acid> 2: having a similar configuration at a selected carbon atom to the configuration of dextrorotatory glyceraldehyde —usually printed as a small capital <D-fructose>
A Nasdaq stock symbol specifying that the stock is a new issue.
Investopedia Commentary
Nasdaq-listed securities have four or five characters. If a
fifth letter appears, it identifies the issue as other than a single issue of common stock or capital stock
Used in the daily or weekly low column of stock transaction tables in newspapers to indicate that the price of a security reached a new 52-week low: d16.
Cen"tu*ry\, n.; pl. Centuries. [L. centuria (in senses 1 & 3), fr. centum a hundred: cf. F. centurie. See Cent.]1. A hundred; as, a century of sonnets; an aggregate of a hundred things. [Archaic.] And on it said a century of prayers. --Shak. 2. A period of a hundred years; as, this event took place over two centuries ago. Note: Century, in the reckoning of time, although often used in a general way of any series of hundred consecutive years (as, a century of temperance work), usually signifies a division of the Christian era, consisting of a period of one hundred years ending with the hundredth year from which it is named; as, the first century (a. d. 1-100 inclusive); the seventh century (a.d. 601-700); the eighteenth century (a.d. 1701-1800). With words or phrases connecting it with some other system of chronology it is used of similar division of those eras; as, the first century of Rome (A.U.C. 1-100). 3. (Rom. Antiq.) (a) A division of the Roman people formed according to their property, for the purpose of voting for civil officers. (b) One of sixty companies into which a legion of the army was divided. It was Commanded by a centurion. Century plant (Bot.), the Agave Americana, formerly supposed to flower but once in a century; -- hence the name. See Agave. The Magdeburg Centuries, an ecclesiastical history of the first thirteen centuries, arranged in thirteen volumes, compiled in the 16th century by Protestant scholars at Magdeburg.
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Audio Help [dee] Pronunciation Key 
